Battle of Long Island (1776)- How the British Defeated Washington at Brooklyn

Battle at a Glance

Historical Background: The Struggle for New York

New York Becomes the British Objective

Following the British evacuation of Boston in March 1776, General William Howe prepared a major campaign against New York. The city’s harbor, surrounding islands and access to the Hudson River made it one of the most strategically important locations in British North America. Control of New York would provide the Royal Navy with a substantial operating base and allow British troops to threaten American communications between New England and the middle colonies.

George Washington recognized the danger and transferred much of the Continental Army from Massachusetts to New York. Throughout the spring and summer, American soldiers constructed fortifications around Manhattan, Brooklyn and the waterways connecting them.

The Declaration of Independence and the Military Situation

Congress adopted the Declaration of Independence on July 4, 1776. Its public reading in New York occurred while British military preparations were already underway. The new United States had formally declared independence, but its principal field army now faced a large, well-equipped British expeditionary force.

Washington’s army included experienced Continental soldiers, newly raised regiments and militia from several states. Training, equipment and discipline varied considerably. Many officers had limited experience directing large formations in coordinated battlefield operations.

The British Concentration on Staten Island

British troops began arriving on Staten Island during the summer. Reinforcements from Europe, including German auxiliary soldiers, increased Howe’s strength. The British also possessed substantial naval superiority, allowing them to move troops among the waterways surrounding New York.

Washington could not know with certainty whether Howe intended to attack Manhattan directly, advance through Long Island or maneuver against another position. The need to defend several possible approaches forced the Americans to divide their strength.

British Landings on Long Island

On August 22, British forces landed at Gravesend Bay on southwestern Long Island. The landing placed a substantial army south of the American defenses around Brooklyn Heights.

The Americans occupied forward positions along a wooded ridge extending across the approaches to Brooklyn. Roads passing through the ridge offered natural defensive points, but the line was too extensive for the available American troops to guard equally.

The American Defensive Problem

Brooklyn Heights contained the principal American fortifications, positioned to protect the East River approaches opposite Manhattan. Forward troops occupied passes through the wooded heights farther south and east.

The arrangement offered two defensive opportunities: contest the British advance along the ridge and, if necessary, withdraw behind the stronger Brooklyn fortifications. Its weakness was the vulnerability of the American flanks, particularly the eastern approaches through Jamaica Pass.

Commanders & Participating Forces

The Battle of Long Island brought together Continental regiments, state troops and militia against British regular infantry, light infantry, grenadiers, artillery and German auxiliary formations. The size and deployment of these forces changed during the days preceding the battle.

American Command

British and German Command

The Maryland Regiment

Maryland troops played a prominent role in the fighting near the Gowanus marshes and the Old Stone House. The regiment was commanded by Colonel William Smallwood, although Smallwood himself was not directing the regiment on the battlefield that day.

Major Mordecai Gist and other officers led portions of the Maryland force during the retreat. A detachment repeatedly attacked British positions to delay the enemy and allow other American troops to escape across the Gowanus wetlands.

The soldiers involved became popularly known as the Maryland 400. The name is commemorative rather than an exact count of the men engaged in the final attacks.

The Delaware Regiment

Colonel John Haslet’s Delaware Regiment served alongside Stirling’s forces on the American right. The Delaware troops demonstrated discipline during the retreat and helped preserve part of the American formation despite the collapse of the broader forward defense.

British Regulars and German Auxiliaries

Howe’s army included experienced British infantry, light troops, grenadiers, artillery and German auxiliaries, many from Hesse-Cassel. These formations operated within a coordinated offensive plan that combined frontal pressure with a large movement against the American flank.

Battlefield Geography & Terrain

The Battle of Long Island was fought across a broad landscape of wooded heights, roads, farms and tidal marshes in present-day Brooklyn. The physical geography explains both the success of the British flanking maneuver and the difficulties encountered by American troops attempting to retreat.

Weapons, Equipment & Logistics

British Infantry Weapons

British regular infantry primarily carried smoothbore flintlock muskets fitted with socket bayonets. Their battlefield training emphasized disciplined movement, controlled volleys and coordinated attacks by infantry formations.

Light infantry and grenadier units were particularly useful in the rapid maneuver and close fighting that characterized Howe’s offensive.

American Infantry Weapons

American troops carried a mixture of British-pattern muskets, locally obtained firearms and other weapons. Equipment and ammunition varied among Continental regiments and militia formations.

Some American soldiers lacked adequate bayonets, placing them at a disadvantage when British troops closed for hand-to-hand combat.

Artillery

British artillery supported the advance and contributed to the pressure against American defensive positions. The British army’s ability to coordinate infantry and artillery gave it an advantage in open ground.

American artillery was distributed among the defensive works and forward positions, but the sudden collapse of the forward line complicated the movement and preservation of guns.

British Naval Superiority

The Royal Navy controlled much of the surrounding water. British ships supported the broader New York campaign and threatened American communications between Manhattan and Long Island.

However, naval movement through the East River was affected by tides, winds and local conditions. These factors became especially important during Washington’s subsequent evacuation.

American Supply and Transportation Problems

Washington’s army was divided between Manhattan and Long Island. Moving soldiers, artillery, provisions and equipment across the East River required boats and careful coordination.

After the August 27 defeat, the American army faced the possibility of being trapped against the river. The ability to assemble suitable boats and experienced crews became essential to its survival.

The Marblehead Mariners

Colonel John Glover’s Massachusetts regiment included experienced mariners, many associated with Marblehead. Their skill in handling boats and navigating difficult waters was crucial during the evacuation from Brooklyn Heights.

The regiment’s contribution demonstrated that specialized maritime experience could be as important to an army’s survival as battlefield performance.

Intelligence & Operational Planning

Washington’s Divided Defense

Washington faced uncertainty concerning Howe’s intended point of attack. British naval mobility made it possible to threaten Manhattan, Long Island or other positions around New York Harbor.

The American commander consequently distributed troops across several defensive areas. This reduced the number immediately available to oppose the principal British offensive on Long Island.

The British Reconnaissance of Jamaica Pass

British commanders identified Jamaica Pass as a vulnerable route through the American defensive ridge. The pass was guarded by a small American detachment rather than a substantial force capable of resisting a major attack.

Henry Clinton strongly favored exploiting this approach. Howe adopted a plan that would combine attacks against the American front with a large movement around the eastern flank.

The British Operational Plan

The British organized three principal movements. James Grant advanced against the American right near the western approaches. German troops under von Heister threatened the center near Flatbush Pass. Howe and Clinton led the main striking force eastward toward Jamaica Pass.

The western and central operations occupied American attention while the principal British column attempted to reach the American rear.

The Night March

During the night of August 26–27, the British flanking force marched eastward and approached Jamaica Pass. The movement relied upon secrecy, local guidance and the failure of American outposts to detect the scale of the maneuver.

The small American guard at the pass was overcome. British troops then advanced toward the rear of the American forward defenses.

The American Command Failure

The American defense did not adequately protect its eastern flank or maintain sufficient intelligence concerning British movements. Once Howe’s main column passed through Jamaica Pass, the forward American formations were exposed to attack from multiple directions.

The result was not simply a failure of individual soldiers. It reflected a larger operational weakness in reconnaissance, command coordination and the distribution of defensive forces.

The Battle Unfolds: Interactive Timeline

Expand each entry to follow the British landing, the night march through Jamaica Pass, the fighting on August 27 and Washington’s evacuation. Times within the battle are approximate.

Tactical Analysis & Command Decisions

The British Operational Envelopment

The decisive British maneuver was the night march through Jamaica Pass. Howe’s plan used separate columns to occupy American attention while the principal attacking force moved around the eastern end of the defensive ridge.

The American forward line was vulnerable because its eastern flank was inadequately protected. Once British troops passed through Jamaica Pass, the defenders faced attacks from both front and rear.

Grant’s Attack Against the American Right

James Grant’s advance engaged Stirling’s troops along the western approaches. The American defenders resisted effectively for part of the morning, but their position became increasingly dangerous as Howe’s flanking column approached from the east.

Grant’s attack contributed to the British victory by holding American forces in place while the larger encirclement developed.

The German Advance at Flatbush Pass

German troops under von Heister pressured American forces defending the central approaches. Their movement helped prevent the Americans from concentrating against Howe’s principal column.

When the British flanking force reached the rear, the defenders near the center faced a rapidly deteriorating situation.

The Collapse of the American Forward Line

American units attempted to retreat toward Brooklyn Heights, but British troops controlled or threatened important routes of escape.

The wooded terrain, limited visibility and lack of coordinated communication made it difficult for American officers to understand the full scale of the encirclement.

The Maryland Counterattacks

Near the Old Stone House, Stirling and a detachment of Maryland soldiers attacked British troops occupying a strong position.

The purpose was not to defeat Howe’s entire army. The attacks delayed British pursuit and created time for other Americans to escape across the Gowanus marshes.

The Maryland troops suffered severe losses, but their resistance became one of the battle’s most enduring examples of sacrificial rear-guard fighting.

Why Howe Did Not Immediately Assault Brooklyn Heights

After defeating the American forward line, Howe confronted the stronger fortifications surrounding Brooklyn Heights. A direct assault could have produced additional British casualties.

Howe instead began siege preparations, expecting to compel Washington’s army to surrender or abandon its position. The decision gave the Americans time to organize an evacuation.

Washington’s Most Important Decision

Washington’s greatest achievement during the Long Island operation came after the battlefield defeat. Recognizing that his army could be trapped against the East River, he chose to abandon Brooklyn Heights rather than risk the destruction of the Continental Army.

The successful withdrawal preserved the force upon which the American war effort depended.

The Soldier’s Experience

American Soldiers Along the Wooded Ridge

American troops defending the passes fought in a landscape of wooded slopes, narrow roads and irregular ground. The terrain offered opportunities for resistance but also restricted visibility.

Soldiers in the forward positions could hear fighting elsewhere without understanding the movements of the larger armies. When British troops appeared in their rear, some formations discovered that their routes of withdrawal were already threatened.

The Fighting at Battle Hill

At Battle Hill, American soldiers resisted British advances across elevated and wooded ground. Infantry combat involved musket fire, movement through difficult terrain and the threat of bayonet attacks.

The fighting formed part of a larger defensive collapse rather than an isolated engagement that could determine the battle independently.

The Maryland Soldiers at the Old Stone House

The Maryland troops who attacked British positions near the Old Stone House faced a nearly impossible tactical situation. Their repeated advances exposed them to disciplined enemy fire and overwhelming numbers.

The purpose of the counterattacks was to delay British pursuit while other Americans escaped. Many of the Maryland soldiers were killed or captured, and the episode became a lasting part of the state’s Revolutionary War memory.

The Retreat Through Gowanus

For soldiers attempting to escape across the Gowanus marshes, the battlefield presented hazards beyond enemy musket fire. Mud, tidal water and difficult crossings slowed movement and separated men from their units.

Some soldiers reached the Brooklyn defenses. Others were captured or drowned while attempting to cross.

American Prisoners

The British victory resulted in the capture of numerous American soldiers, including senior officers. Prisoners faced confinement and uncertain treatment in the difficult conditions surrounding British-occupied New York.

Captured soldiers could experience disease, inadequate food and prolonged imprisonment, although individual circumstances varied.

The Night Evacuation

During the evacuation, American soldiers had to move quietly from their fortifications to embarkation points along the East River. Boats crossed repeatedly between Brooklyn and Manhattan.

For men who had survived the battle, the withdrawal offered a narrow escape from an increasingly dangerous position. Experienced mariners and disciplined rear guards made the operation possible.

Where Was Your Ancestor’s Unit?

Family historians researching the Battle of Long Island should distinguish among service in the New York campaign, presence on Long Island during August 1776, participation in the August 27 fighting and involvement in the August 29–30 evacuation.

A soldier may have served in Washington’s army during the campaign without participating in the forward battle.

Units and Research Questions

Researching the Maryland 400

Claims of descent from the Maryland 400 require particular care. The familiar name does not identify a fixed, universally agreed list of exactly 400 men.

Researchers should establish whether the ancestor served in the Maryland Regiment during August 1776 and whether surviving records connect the soldier to the detachments fighting near the Old Stone House.

Regimental membership alone does not establish participation in the final counterattacks.

Researching Soldiers Captured at Long Island

Prisoner lists, exchange records, military correspondence and pension declarations may help identify soldiers captured during the battle.

However, a prisoner recorded in New York during 1776 was not necessarily captured on August 27. The place and circumstances of capture should be established independently.

Evaluating Pension Declarations

Record the soldier’s exact description of service, commanding officers, enlistment dates and geographic locations. Compare the account with contemporary muster rolls, pay abstracts and regimental histories.

Descriptions such as “served at New York,” “was under Washington” or “was on Long Island” do not necessarily prove participation in the principal battlefield engagement.

Battle Outcome & Casualties

A Decisive British Battlefield Victory

The British army defeated the American forward defenses, captured numerous prisoners and forced the surviving American troops to withdraw behind Brooklyn Heights.

Howe’s coordinated offensive achieved its immediate tactical purpose. The movement through Jamaica Pass exposed the American rear and transformed a defensive contest along the wooded ridge into a major American defeat.

Published Casualty Estimates

Commonly cited estimates place American losses at approximately 2,000 killed, wounded and captured, although some histories provide higher or lower totals.

British and German casualties are generally estimated at approximately 400, with published figures varying according to the returns used.

Losses Among the Maryland Troops

The Maryland soldiers engaged near the Old Stone House suffered severe casualties during their attempts to delay British pursuit.

Exact figures for the detachment vary among historical accounts, and the commemorative term Maryland 400 should not be treated as a precise casualty return.

The Survival of the Continental Army

Although the Americans lost the battlefield, Washington preserved the greater part of his army by withdrawing behind Brooklyn Heights and subsequently evacuating across the East River.

The British victory was therefore decisive at the tactical level but incomplete at the operational level. Howe had defeated the American forward line without destroying Washington’s principal field army.

Who Won Long Island?

The British won the Battle of Long Island on August 27, 1776. Their superior coordination, numerical strength and successful flanking maneuver overwhelmed the American defense.

Washington’s subsequent evacuation did not reverse the battlefield result, but it prevented the defeat from becoming a potentially catastrophic surrender of the Continental Army.

Strategic Significance & Aftermath

Washington Abandons Brooklyn Heights

Following the defeat, Washington recognized that the American army could not safely remain behind the Brooklyn fortifications indefinitely.

During the night of August 29–30, American troops evacuated across the East River to Manhattan. The operation preserved the army and denied Howe the opportunity to capture its remaining forces.

The British Capture New York

The victory at Long Island opened the way for continued British operations against Manhattan. During September, Howe’s army advanced against New York City, forcing Washington to withdraw.

British forces retained New York City as an important military base for the remainder of the Revolutionary War.

The Limits of British Victory

Howe’s army demonstrated its ability to defeat American forces in a large conventional engagement. Nevertheless, the survival of Washington’s army prevented the British from converting battlefield success into the immediate destruction of organized American resistance.

The campaign illustrated a recurring problem for British strategy: occupying important territory did not necessarily eliminate the Continental Army or end the rebellion.

Washington’s Changing Military Strategy

The defeat reinforced the danger of exposing the Continental Army to destruction in a battle against a larger and better-equipped enemy.

Washington increasingly emphasized preserving the army, avoiding unfavorable engagements and selecting opportunities for limited counterattacks.

These principles would influence subsequent operations during the retreat across New Jersey and the winter campaign of 1776–1777.

The Maryland 400 in American Memory

The Maryland troops who fought near the Old Stone House became symbols of sacrifice and determination. Their counterattacks helped cover the retreat of other American soldiers, even though they could not change the outcome of the battle.

The episode remains an important part of Maryland’s Revolutionary War history.

The Road to Trenton and Princeton

After the loss of New York, Washington’s army experienced additional defeats and withdrawals. By December, the American military position appeared increasingly precarious.

Washington’s victories at Trenton on December 26, 1776, and Princeton on January 3, 1777, helped restore morale and demonstrated that the Continental Army remained capable of offensive action.

The Importance of the Brooklyn Evacuation

The evacuation became one of Washington’s most consequential command decisions. It required secrecy, maritime expertise and careful coordination among units under difficult conditions.

By preserving the army, Washington ensured that the struggle for American independence would continue despite the defeat on Long Island.

Primary Sources & Historical Research

The Battle of Long Island can be reconstructed through British and American correspondence, military reports, contemporary maps, officer accounts, regimental returns and later historical research.

Primary Sources and Archival Leads

1. George Washington’s correspondence, August 1776. Letters and reports concerning the defense of New York, the Battle of Long Island and the withdrawal from Brooklyn.
2. General William Howe’s official reports and correspondence. British accounts of the campaign, operational movements and battlefield results.
3. Henry Clinton’s military papers and campaign accounts. Important evidence concerning the British plan and the movement through Jamaica Pass.
4. American regimental muster rolls and returns. Evidence for unit strength, service dates, casualties and possible battlefield participation.
5. Contemporary maps of Long Island and Brooklyn. Sources for the roads, passes, fortifications and waterways that shaped the battle.
6. Maryland and Delaware military records. Essential for researching the regiments engaged near Gowanus and the Old Stone House.
7. Continental Army pension declarations. Later testimony that may help establish individual service, but should be compared with contemporary records.

Historical Research and Battlefield Interpretation

1. American Battlefield Trust — Long Island. Battle overview and historical interpretation.
2. National Park Service — Revolutionary War History. Revolutionary War resources.
3. George Washington’s Mount Vernon — Battle of Long Island. Historical encyclopedia article.
4. Founders Online — National Archives. Washington’s correspondence and documentary editions.
5. Library of Congress — Maps and Revolutionary War Collections. Historical maps and documents.
6. National Archives — Revolutionary War Records. Military service and archival research.
7. Brooklyn Historical Research — Center for Brooklyn History. Brooklyn historical collections.
8. Maryland State Archives. Maryland Revolutionary War records and historical research.

Research Limitations

Published histories differ concerning the number of soldiers engaged, the precise movements of individual American units, casualty totals and the number of Maryland troops participating in the final counterattacks.

The timing and sequence of some battlefield movements must be reconstructed from accounts written by officers who possessed only partial knowledge of events beyond their immediate positions.

Contemporary maps and military returns should be prioritized when making precise claims concerning unit locations or individual participation.